Stop motion for twisting machines



1,524,439 H. LABIS STOP MOTION FOR TWISTING MACHINES Filed June 27, 19222 Sheets-Sheet INVENTORJ ATTORNEY 1 1,524,439 H. LABIS STOP MOTION FORTWISTING MACHINES Filed" Jun; 27 1922 2 Sheets-Sheet 1 TNVENTOR;

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ATTO NE Patented Jan. 27, 1925.

UNITED STATES PATENT STOP MOTION FUR TWISTING MACHINES.

Application filed June 27, 1922.

To all whom, it may concern:

Be it known that I, HENRY LAms, a subject of the King of Belgium, andresident of Mouscron, Belgium, have invented certain new and usefulimprovements in and Relating to Stop Motions for Twisting Machines, ofwhich the following is a specification.

My present invention relates to an improved stop-motion for threadtwisting machines, whereby the thread coming from the spool on the creelwill be stopped in case of its break at any point of its course. Thestop of the thread may be effected according to my invention by means ofany desired blade or the like, interpo-sing between the pressure rollerand the drawing roller between which the thread is moved, the pressureroller being thus raised above the drawing roller so that the threadwill no longer be carried away.

An essential feature of my improved device resides in its greatsimplicity; it does not comprise complicated parts or mechanisms, norsprings or the like.

Another feature is the instantaneous stop of the thread to be twisted,which stop is caused by the action of a part on the thread and not onthe drawing roller, which continues its rotation.

The invention is illustrated by way of eX- ample in the accompanyingdrawing, wherein:

Fig. 1 is a diagrammatical view of the working parts of a twistingmachine element, showing the course of the thread from the spool on thecreel to the twining spool, the machine being in normal operation.

Fig. 2 is a similar view showing the various parts in their positionsafter the break of the thread.

My present device is applicable to an system of twistin loom, eitherwith wings, slider, needles or 518 like.

The thread 1 wound off the spool 2 on the creel is first moved throughthe threadguide 3, then around the pressure roller 4 arranged above thedrawing roller 5 and around the pillar 6 to pass again between thepressure roller 1 and drawing roller 5. Then the thread is moved throughthe eye let 8 of my device grid the thread-guide 9 and slider 10 to thetwining spool 7.

My improved device comprises a body portion 11 serving to attach thesame to the frame 12 of the loom, and a part of particu- Serial No.571,232.

lar shape, pivotally connected at 13 to the body portion 11. Said partis formed of two portions: a lower portion 1 1 ending into the eyelet 8and rigidly connected at the pivot pin 13 to the upper portion 15. Thelatter carries a pin to which is pivotally connected a projection 16.Secured to the latter in any desired way is a blade 17, held inhorizontal position by any desired means (not shown).

The constitution of this part of my im proved device has been describedand shown merely by way of example and shall not limit my invention. Thenumber and shape of the parts may be varied, and the projection 16, forinstance, may be avoided and the blade 17 directly connected to the pinof the portion 15. Again the portions 14 and 15 may be made of a singlepiece.

In normal operation (Fig. 1) the thread 1 passing through the eyelet 8produces a tension or drag on the lower portion 14:, whereby the upperportion 15 will beheld vertically against the frame 12. If a break ofthread occurs, the portion 1 1 which is no longer sustained, will dropinto the position shown in Fig. 2, the weight of said portion causingthe blade 17 to be moved horizontally below the thread 1 and between thepres sure roller 4 and the drawing roller 5, said blade thus raising thepressure roller 4: somewhat above the drawing roller 5 in its bearings18. In this way, the thread 1 will nolonger be in contact with thedrawing roller 5 and therefore stopped.

If the thread. breaks between the eyelet 8 and the guide 9 or the spool7, the thread will be brought back (Fig. 2) whereby the end of thethread will be prevented from being carried away by one of the adjacenttwining members, which occurs frequently in other known arrangements. Ifon the contrary the break of thread occurs above the eyelet 8, thefloating end of thread cannot be engaged and carried away by a movingpart, the blade 17 and the pressure roller 4t retaining the thread.

Therefore my improved arrangement has the advantages of great simplicityin construction, operation and application; immediate stop of the threadif a break occurs; absolute reliability in operation, requiring noadjusting of springs, no manipulation for starting the element after thebreak of a thread, and cntangling of threads is impossible at the momenta break occurs.

same

fminal eyearranged below said roller the npper part beingsubstantiallycoextensive in length With'that of the body portion, themember being pivotallyconnected at the :j inctnre of its parts to the"lower endlof said body portion, and a blade pivotally connected to theupper end of said ,upper part of said member, said upper part of themember moving into contact with and limited in movement by said bodyportion to define and position the blade in its inoperative positionrelative to the roller, whereby the operative movement of the blade isthe same under all conditions.

Dated this 7th day of June, 1922.

HENRY LABIS.

Witnesses PAUL Roman, J EANNE THOMAS.

